Lock.



No 827,178. 'PA-TENTEDJULY 31, 1906.

I T. E. POLLMANN.

LOOK.

APPLICATION FILED APB.17,1905.

3 SHEETS-SHEET 1.

WITNESSES:

INVENTOR.

9. zfiwa; I vmma THE NORRIS PETERS C6,, wasnnvm'cu, u. c.

N0- szmvs. V PA-TENI'BD JULY'814, 1906,. :2. E. POLLMANN.

LOOK. APPLICATION FILED APE.17,1905.

3 BHEETS+SHEET 2.

WITNESSES;

|THE NORRIS PETERS can, WASHINGTON, n. c.

tion, such aswill the casing and'plates of the releasing-key coeperates.reference indicate like UNITED STATES. PA

J TONIUS E. POLLMANN, or BANT BY WiLi iELMsHAvEN; eERMANY.

Loo

To (ZZZ whom it may concern:

citlzen of Germany, and a resident of Bant by tain new and usefulImprovements in Locks;

- and I do hereby declare the following to be a Specification of LettersPatent. Application filed April 17a 1905-. Seria1No.Z55,98fii e it knownthat I, ToNiUs E. PoL-LMANN, a

'Wilhelmshaven, Germany, have inventedcerfull, clear, andexactdescription of'the invenenable others skilledin the art to which'itappertains to make and'use the same, reference being had to theaccompanying drawings and tothe figures ofreference marked thereon,which form a part of this specification. m ii My invention relates tocoin-controlled more especially adapted for looking a bicycle,

locks, and is shown in the drawings'as being vehicle, or thelike to awall, building, or post, but may also be adapted to nearly any use'towhich a bolt-lock might be applied.

, The object of my invention is the provision of'a durableandefficient'lock of'the stationary class the arrangement,*operation,and parts of which are fully construction of the described in thefollowing specification and; shown in the accompanying drawings, in.

which- Figure l is a -fro'nt elevation of the inven' tion with the frontcasing removed and showing the operative parts in normal or unlockedposition. Fig. 2 is a similar view with the f operative parts shown inloekedposition-and portions thereof in section.

In the lower right-'hand'corner of this figure the mechan ism employedfor locking the operativeparts to the backing plate is shown partlybroken away, with the key in position therein and;

the parts in unlocked position.

parts shown in section. top and front detail views Fig.3 is a sideelevation of my invention setup, with. Figs; 4 and 5 aref of aportion ofthe 3 locking mechanism designed to prevent tam pering with the look byunauthorized persons, and Fig; 6 is an outer side elevation of Likenumerals of I parts in all the figures of the drawings.

the lock with which i vReferringto the drawings, 1 represents af wall,post,( )r other stationaryobject, and 2% the backing piece or plate ofmy. invention,

whichis bolted or otherwise rigidly secured;

to said'wall or post and has its perimeter 'formedwit'h anoutwardly-projecting flangeg 2 andlshaped, 'as-shown'in the drawings,to: receive the operative partsofthein'vention. Removably secured totheouterf face. of the i down, as shown in Figs. 2 an v I end of-jthe'finger" 6 is pivoted a point 6 which is adapted-to be swung outwardly toed by the L{ or other object 7 tertherewith by Patented July 31, 1906;

backing plate by meansjhereinafter d= f TENT OFFICE scrlbed, isthe plate3 5 to which the operative parts ofimy in Figs. land 2, and thus maderemovable with 'said plate from the backing-plate Projecting. edge ofthe. backing-plate 2 in a plane there= with is the arm 4, which has itslower'and Q.

65 I of said-pla'te; Snugly mounted side edges formed with acontinuationof the flange 2 within" the groove or channel 4"? in the arm 4horizontal portion from s'aidarm and-its upperend rigidly se cured inanysuitable manner tothe face of the upper end of the L member 5, it isformed a'portion of its length witha dovetailed groove 5*, in which isreciprocally mounted the plunger 6' of the lock, which invention areattached, as shown downwardly from the lower Q is the Lshapedarm 5,which hasits foot or I projecting at right angles the plate 3 at itslower edge. Beginning at terminates at its=1ower1end in the Lrsha edfinger 6 the free end of which is adapte to.

register with a depression 5' portion ofl the member 5 and toseattherein when the plunger andlfinger permit the insertion within thespace bound.-

member 5 and finger 6 of atire oot ofthe member 5'and point'6 when theplunger and finger are raised'on in unlocked position. I

I The loweringof theplungere prevented by reason of a lug 6 on itsforward 1 face engaging the upper edge ofthe'trans versel y-disposedmember 8, which is mounted to' have a longitudinal reciprocatorymovement within thetwo bosses the plate 3 at eachside forced down. tolocked pressure.

position by ncternal The left-hand side of the notch and the contiguousupper edge of the lug-6 I are pressed At-th'efree parted to the members, which 1n thehorizontal to be' locked, which is;of; greater thicknessthan the spacebetween the l I land 2) which is normally-out positionshown in to pass below thesame as the plunger 6 and connected-fing'erare the member 8.

are correspondingly beveled to permit said lug in its raising movementto force the member 8 to the left, and thus allow the lug to passthrough the notch.

To effect a proper movement of the member 8 from without the casing ofmy device, as it may be desired to lower the plunger 6 and attachedfinger to look a wheel or other object to the foot of the L member 5, Iprovide a coin-controlled mechanism, as shown at the left of theplunger. A coin of the proper weight and size is deposited in thecoin-chute 9 through a slot (not shown) provided in the side of thecover or outer casing 10, which is bolted or otherwise secured to .theplate 3 over the operative parts of the mechanism and has its rimseating snugly Within the flange 2 of the backing-plate 2. As the-coinleaves the lower end of the chute 9 it drops into a coin-receptacle 11,which is mounted at the end of the long arm of the lever 12 and has itslower portion tilted slightly outwardly, so that its back is not inexact parallellism with the plate 3, and its lateral orside flanges 11*?cut away at top and bottom, the upper cut portion being of suitableWidth to allow the coin to pass therethrough, while the lower portion ismore restricted, as shown. The lever 12 is pivoted at 12 to the plate 3and terminates at its inner end in the short arm 12 which is adapted toproject within a notch 13* in the lower end of the oscillatory member13, which is pivoted at 13 to the plate 3. An arm 13 projects laterallyfrom the member 13 toward the chute 9 and has a weight 13 mounted at itsouter end to act as a counterbalance for the lever .12 and normallyretain the coin-receptacle elevated directly under and in contact withthe lower end of the chute 9. The member 13 has connection with thecontiguous end of the movable locking member 8 through the mediu of thepivotally-connected links 14, thus causing an oscillation of the member13 to impart a reciprocatory movement to It will thus be seen that as acoin drops into the receptacle 11 from the chute 9 its weight willoverbalance the weight 13 and cause the outer end of the lever 12 to belowered, thereby imparting an outward oscillation to the member 13 and a.movement of the locking member 8 sufficient to draw the notch thereinin alinement with the lug,6. The parts remain in this position until thelower end of the lug 6 on the descending movement of the plunger 6 comesin contact with and causes an oscillation of the lever 15, which ispivoted at 15 to the plate 3 and has its opposite end in looseengagement with the coin-extracting slide 16. The coin-extractor 16 ismounted within and has its movement guided by the guide member '16,which is secured to the plate 3 and is disposed in the arc of move mentof the coin-receptacle 11. The extractor has its outer edge beveled ortapered toward its upper end to adapt said upper end to extend under theconnected portion of the receptacle 11 and its gradually-thickeningportion to project through an opening or cut-away portion in the lower part of the receptacle in an intersecting plane therewith, as shown inFig. 2, thus causing the lower edge of the coin to be forced outwardlyfrom engagement with the side flanges 11 of the receptacle andpermitting it to slide along the extractor 16 and drop within theremovable coin-receiving box or receptacle 17, which is shown by dottedlines in Fig. 2. As soon as the coin is released from the receptacle 11the lever 12 and members 8 and 13 are actuated to return to their normalpositions by the counterbalance 13 The mechanism employed for lockingthe plunger 6 and attached finger in lowered. or locked positioncomprises the bell-crank lever or lifting-finger 18, which is pivoted at18 to the plate 3 and has the end of its long arm loosely projectingwithin an opening 6, provided transversely in the upper end of theplunger 6 and the end of its short arm connected to thehorizontally-movable block 19 through the medium of the pivotal link18". The block 19 is mounted for movement in the horizontal leaders orguides 20, which project from the face of the plate 3, and is spaced asuitable distance from said plate to enable the short arm of the lever18 to project between their contiguous faces, a slot (not shown) beingprovided in the outer end .of the lower guide or leader 20 for thatpurpose. The lever or lifting-finger 18, block 19, and plunger 6 areactuated to normally, remain or move to the positions shown in Fig. 1 bymeans of the spring 21, which is centrally coiled about the pivot ofsaid lever or in substantial axial alinement therewith and has its endscrossed and one fixed. at 18 to the long lever-arm and the other fixedto a stud 22, projecting from the forward edge of the upper guide orleader 20.

Secured to the plate 3 at the left or inner end of the leaders 20, asshown in Figs. 1, 2, 4, 5, and 6, is a rectangular casing or frame 23,which has the side thereof facing the leaders left open. Mounted forhorizontal reciprocal movement within this frame are a plurality ofsuperimposed plates 24, which are capable of independent movement towardand away from the inner ends of said leaders. These plates have theirinward movements limited by the cars 24 thereon acting as stops whichcoact with the contiguous edge 23 of the front side of the frame 23, asshown in Figs. 2 and 5.

The ends of the leaders or guides 20 adjacent to the casing or frame 23are partially cut away, as shown at 20 in Fig. 4, and projecting fromthese cut-away portions are the upper and lower studs 22 and 22, re-

in longitudinal alinement with the block 19 is a tumbler 27, which hasprojections formed notch 19*,provided near the inner end of the block 19in its upper or lower'edges, as the case may be, when said block ismoved to the left a predetermined distance by the lowering movement ofthe plunger 6. The ends of .the tumblers 27 are caused to be oscillatedout of the path of the. block 19 on the inward movement thereof byreason. of the beveled. corners of said block coming in contact with theprojections on the tumblers. When the block 19 is in the position shownin Fig. 1, the tumblers 27 each have, their inward movement limited by alip 27 thereon en gaging the contiguous portion of the leaders or guides20. At the end of each tumbler adjacent to the casing or frame 23isformed -a finger 27 which projects in the path of movement of anda'buts laterally against the inner edges of a portion of the plates 24,as the combination of the lock may require, thus causing an inwardmovement of the plates to impart, an outward oscillatory movement to thetumblers in opposition to the springs 28 and to disengage theprojections thereon from the notches in the block 319, which unlocks andpermits the plunger 6., lifting-finger 18,

and block 19,actuated by the spring 21, to

' return to their normal or unlocked positions,

are moved from without the inclosing casing as shown in Fig. 1.

The proper. combination of the plates 24 or cover 10 by means of a fiatrectangular key-29, which has its inner end formed with a series ofarbitrarily-arranged pins or projections 29 of varying lengths, whichare adapted'to pass through alining apertures in the vertical plate 25and have contact with the outer ends of the plates 24, coacting with.the tumblers 27, orseat within sockets of varying depths therein,whereby an inward pressing of the key imp arts-the desired movement totheproper plates 24. For the purpose hereinafter described the key 29 isprevented from withdrawal from the lock except when. the plunger islowered and the several parts in locked position by reason of aspring-pressed dog 30 being mounted on the stud 22 and having its hookedend normally retained in engagement with a notch 29 in the lower edge ofsaid key. This dog is caused to be released from engagement with thekey29 on the inward or looking movement of the block by reason oftherearwardlyprojecting finger 30 thereon being engaged by a pin 30 orcam-surface formed on the inner side of said block, as shown in In orderto provide a safeguard against the lock being tampered with or unlockedby per sons not-holding a key therefor, I pivot an.

spectively. Mounted 'on each of these studs auxiliary tumbler 31 to theupper guide or leader 20 at 32 and form a projection 31 thereon,adaptedto project through an opening or slot in the leader and be thrownby the "action of a spring 33 into engagement with termediate of sai endand the proj ection31 The tumbler 31 is.

with a slot or notch 31?. normally held elevated with the projection 31thereon out of engagement with the I notch 34in ithe block 19 by meansof a hori zontally-oscillatory member'35, which is pivoted at 35? to thelower guide or leader 20 and adapted tohave its enlarged face in contactwith the inner ends of the plates 24 not included in thelockingcombination or having contact with the tumblers 27. When themember 35 is in normal position, as shown in Figs. land 2 and by dottedlines in Fig. 5, its upper reduced end is in engagement with the undersurface of the tumbler 31- and re- .tains it in elevated position.

v Should any of the plates 24 not engaging the tumblers 27 be pushedinwardly by a person tampering with the lock, the member 35 would bemoved on its pivot to the position shown in Fig. 5, with its upperreduced end in register with the slot or notch 31 in the tumbler 31,thus permitting said tumbler to be moved by the action of the spring 33until its projection 31 engages the notch 34 in the block 19.

When the auxiliary tumbler 3 1 has been thus thrown into engagement withthe block 19, the parts may be unlocked by a special key 36,. providedfor that purpose, or the plate 3 and attached parts may .beremoved fromengagement with the backing-plate 2, as hereinafter described, to permitan ordinary key to beinsert ed 'in the keyhole 37 through the plate 3and turned to throw the member 35 back to its normal position, and thuselevate thetumbler 31 out of engagement with the block 19 after whichthe tumblers 27 may be released therefrom in the usual manner.

The key 36 is shown in Figs. 2 and 5 and comprises a.hollow-rectangularmember similar in shape and size to the key 29 andformed at itsinner end with pins 36 similar to those of said key 29.Mounted to have lateral movement within the hollow portion of the key isa bar 36 which has its outer end made rigid to a grip 36, adapted to bemoved laterally of theend of the key and its inner end formed with alaterally-projecting pin 36 which is normally retained within the bodyof the key by one or more contraction springs 36, acting on the bar'36One of thepurposes of the key 26'is to efe feet a release, of theauxiliary tumbler 31 from engagement with the block 19, which cannot beaccomplished by the key 29. When used in this connection, the key 36 isinsertedin the lock with the pins 36* thereon in contact with the sameplates 24 as are operated on by the pins of the key 29 and the pin 36carried by the movable bar 36 projecting upwardly in position to havecontact with the pin 31 on the tumbler31. The bar 36 in the key is nowmoved upwardly to cause a shooting or outward movement of the pin 36sufficient to engage the pin 31 and raise the tumbler 31 from engagementwith the block 19. As the tumbler 31 is raised the key is pushed in toeffect a release of the tumblers 27, thus unlocking the block 19 andpermitting it to return to normal position. When the pin 36 is inextended position, said pin, the bar 36*, and grip 36 assume thepositions relative to the key-body 36. (Shown in the lower right-handcorner of Fig. 2.)

In order to prevent additional strain on the block 19 and tumblers 27,due to an up ward pressure on the plunger 6 and attached finger when theparts are in locked position, as shown in Fig. 2, I form a series ofteeth 18 at the end of the long arm of the lifting-finger 18, which areengaged by corresponding teeth 18 on the lower surface of the opening 6as the plunger 6 is raised independently of the lifting-finger 18.

An antifriction-roller 38 for contact with the inner surface of thecasing or cover 10 as the plunger is raised or lowered is mounted insuitable bearings at the upper end of the plunger 6 and is adapted toprevent a bind ing of said plunger within the dovetailed groove in theguide member due to lateral pressure being exerted on the finger 6 as itis forced down.

At the lower right-hand corner of the plate 3 is secured a device forlocking the plate 3 to the backing-plate 2. The locking elements of thisdevice comprise a spring pressed bell-crank lever 39 and notched boss40, which latter projects from the face of the backing-plate 2 throughan aperture 11 in the plate 3 and is engaged by the horizontal arm ofsaid lever 39, as shown in Fig. 3. To effect a release of the lever 39from the boss 40, I insert the end of the key 36 through a slot in theunder side of the cover and into the box 42, which is mounted on theplate 3, with the pins 36 thereon projecting through registeringapertures in the upper end of said box and the longer ones in engagementwith the end of a second box 43, that is mounted over and adapted tohave a vertically-reciprocatory movement on said first box 42, as shownin Fig. 2. As the key is inserted the box 43 is raised against thetension of the springs 43 until the pin 36 in the key comes in alinementwith an aperture in the side of the inner box 42 adjacent to thevertical arm of the lever 39, the said aperture being uncovered by theraising of the box 43. The release of the catch 39 from the boss 40 maynow be effected by moving the bar 36 in the key to the left, so that thepin 36 passes through the aperture in the box 42 and engages and causesthe catch to be oscillated out of engagement with the boss, as shown inFig. 2.

The operation of my invention is as follows: The normal position of theseveral parts of the mechanism is as shown in Fig. 1, the plunger 6 andattached finger being elevated or in unlocked position and the key 29locked against withdrawal from the look by reason of the dog 30 engagingthe notch 29 in said key To effect a lowering or locking movement of theplunger 6 to enable an object to be locked to the foot of the member 5,a coin of the proper weight is dropped into the chute 9. As the coinfalls from the chute into the receptacle 1] its weight overbalances thatof the weight 1.3 on the member 13, thus causing a lowering of the longarm of the lever 12 and imparting oscillation to the member 13 and alongitudinal movement to the member 8 sufficient to move the notchtherein in register with the lug 6 on the plunger 6. The plunger may nowbe lowered to locked position. Near the limit of lower movement of theplunger the lug 6 thereon comes in contact with the lever 15 and causesan, upward movement of the coinextracting slide 16, which engages andemits the coin from the receptacle 11, thus freeing it of its load andpermitting it to be returned to its normal elevated position by theaction of the counterweight 13. As the plunger 6 is lowered the liftingfinger 18 is drawn down against the tension of the spring 21, thuscausing the block 19 to move to the left and be engaged and locked bythe tumblers 27. As the block 19 is engaged by the tnm blers 27 the dog30 is freed from engagement with the key 29, thereby permitting the removal of the latter from the look by the person who deposited the coin,which he carries until he wishes to release the locked article from theapparatus. The release is accom plished by inserting the key within thereceiving-slot therefor with its pins 29 proj ecting within theapertures in the plate 25 in contact with the outer ends of the properplates 24 contained in the lock combination. As the key is pressedinwardly the plates 24: are likewise pressed against and cause a releaseof the tumblers 27 from engagement with the block 19, thus permitting areturn of the block 19, lever 18, and plunger 6 to their normal unlockedpositions, due to the action of the spring 21 on said lever. When it isdesired to remove the plate 3 and attached parts from the backing-plate2, the key 36, which is left in charge of some one near where theapparatus is mounted, is inserted within the box 42 and manipulated, as

engagement with the notch in the boss 40,

after Which the operative parts -may be removed. 7 v

[It is obvious that such changes in the form, proportion, and

minor details of arrangement and construction ,oftheparts-as may fairlyfall within the scope of my invention be made withoutdepartingfrom' thespirit or sacrificing any of the advantages t ereof.

i or bolt,

I While I have shown and. described both the lock and thecoin-controlled mechanism by which the lock in its present arrangement I5 is made operative,-I do not wish to confine myself to the use of thismechanism in connection with my look, as other means for releasing theplunger=6 might be employed.

Having thus describe my invention, what I claim as new, and desire tosecure by Letters Patent, is I f 1. The combination in a lock, of a boltor plunger having an opening in a' portion thereof, said opening. havingone side provided with teeth, a lever having one end in loose engagementwith the openmgin the bolt or plunger and provided with teeth forengagin the teeth in said opening when an inward pressure is applied tothe bolt or plunger, and mechanism for locking the lever and bolt orplunger in one position of movement,

2. The combination in a'lock, of a plunger a separate reciprocatoryelement, a lever having one arm in connection with the plunger or boltand its other arm connected to said element whereby they are caused tohave dependent movement, means for retaining said parts in lockedposition, means for releasing said means to permit an unlocking movementof said parts and means for causing an automatic return of the plungeror bolt and locking parts to normal or unlocked position whenreleased.

3. In a lock, a bolt or plunger, a lever having one arm in connectionwith said bolt or plunger, a sliding member having connection with theother arm of said lever, one or more tumblers for engaging and retainingsaid memberin one position of movement, means coacting ith said tumblersadapted when moved to cause their release from said member to permit amovement thereof and means for causing an automatic return of the partsto position when said member is released by the tumblers;

4- In a lock, a bolt or plunger, a movable block, means for impartingmovement from one to the other of said elements, one or more tumblersfor engaging and retaining said block in one position of movement, aplurality of movable members mounted to have contact with said tumblersand adapted when moved to cause a release of the tumblers fromengagement with said block.

5. In a look, a bolt or plunger, a movable one to the other of said andmeans for effecting a return connected tion. r i

6. In a lock, an L member, a

of said block'an plunger.

for coacting with the foot of said member the plunger ing a retractionof the ment is released. a u

7. In a lock, the combination with a recippos1tion of movement, aplurality of plates cause a release ofthe tumblers from said'element topermit. a movement thereof.

able element, of a series of tumblers mounted in position to haveengagement with and rement, a series adjacent tosaid tumblers with aportionin and means movable by a movement of said movable member, ofmechanblo ck in one position of movement, means for releasing saidtumblers from said engagement, means independent of saidreleasingmovably mounted adjacent to said tumblers with a portion incontact therewith, means i I forimparting movement to said plates to I.

8. In a lock, the combination with a movengagement therewith, a key forimparting movement to said members to cause a move- 1 ment of saidtumblers to release said element, 1

element and having engagement with said parts to normal or unlocked posiI guided by said member and havingja finger j when saidfplunger'is-inextended position, a sliding element, a lever connecting said phingerand element whereby a movement of one. is imparted to the other,mechanism for locking said element against movement when is extended,and means for Causv i plunger when-said ele- "'1 roc atory' element, ofa series of tumblers for engaging and retaining said element in onetainsaid element in one position of move-V of movable members mountedIOO,

amow

bolt, and means for connect- 7 said member in one position is 'in lockedposition, said element having a fixed pivot. v

10. In a lock, the combination with a movable locking member, of one ormore tum- J blers for'locking said member in one position of movement, aplurality of movable plates,

a portion of which have engagement withw and are adapted when movedlease of the tumblers from said member, an auxiliary tumbler mounted toment with said member, and a have engagemovable eleto cause a re 1 mentnormally positioned to retain said auXilliary tumbler out of, engagementwith said member and movableby a movement of the plunger and lattermeans in one position of notch therein in registration with the lug toan opening in its inner end formed with .the other arm of the lever, andmeans for secting that of the bolt or plunger, a bellcrank leverconnecting said bolt or plunger and said member for causing them to movein unison, means for locking the movable member to retain the bolt orplunger in eX- tended position, and mechanism for locking the bolt orplunger in inclosed or unlocked position.

14. In a lock, a backing member, a plate removably secured to saidbacking member and having a downwardly and outwardly disposed projectionextending from one side thereof, a plunger guided in its movement bysaid projection and having a finger projecting therefrom adapted tocoact with the outj wardly-dispos: d portion of the projection, amovable block, means connecting said plunmember having l ger and blockfor imparting a movement infrom one to the other, one or more tumblersternal teeth, a lever having one end loosely for engaging and retainingsaid block in one inserted in said opening whereby an oscillaposition ofmovement, means for causing a tion thereof imparts movement tothe bolt,release of said tumblers, and means for norsaid lever being providedwith teeth to coact mally retaining the plunger and block in unwiththe-teeth on the bolt when an inward locked positions. pressure isexerted on the bolt, means for In testimony whereof I have hereuntonormally retaining said lever in one position, signed my name to thisspecification in the a movable element having connection with j presenceof two subscribing witnesses.

locking said element in one position of move- TONIUS POLLMANN' platesnot engaged by said first-mentioned tumblers to permit the auxiliaryplunger to engage said member.

11. In a lock, a reciprocatory plunger having a lug thereon and anL-finger projecting laterally therefrom adapted to coact with afixedobject when the plunger is lowered, a member disposed in the pathof said lug and provided with a notch normally out of register with saidlug, means for causing a move- I ment of said member adapted to placethe permit a lowering of the plunger, means for effecting a return ofthe plunger to normal position, and mechanism for locking said theirmovement.

12. In combination, a bolt ment. Witnesses 13. In combination, a bolt orplunger, a A. WIESS, member having its plane of movement inter- J AS.SIER.

